Update PROJECTS.md
Update PROJECTS.md

Some products in development went LIVE with React on Rails!
shakacode/react_on_rails,szyablitsky/react_on_rails,szyablitsky/react_on_rails,shakacode/react_on_rails,shakacode/react_on_rails,shakacode/react_on_rails,szyablitsky/react_on_rails,szyablitsky/react_on_rails,shakacode/react_on_rails